Bach's Prelude in C (BWV 846) Modulation

Question

Bach's Prelude in C (BWV 846) _ the Bb notes at end are not a modulation to F Major because: 1) No perfect cadence in key of F 2) Are not enough Fs 3) F Major is composed of F,A,C and Bb is note one of the notes 4) Bnaturals contradict Bb 5) C bass note runs through the last bars. Choose all that apply.

Answer 1

From mm 31-32 Bach moves from a G7 over G to (32) C7 dominant over C. He implies the transition to a Secondary Dominant - F. But he does not intend to resolve there. The effect is an increased tension of the C7 over C anticipating the final resolution to the tonic.

I would select 1, 3, and 5.

1) No perfect cadence - this is True

2) Not enough Fs (strange answer), rather F is there as a secondary dominant. I find this irrelevant. - False

3) There is no third or fifth. - True

4) B-n contradicts Bb - this is strange and irrelevant. - False

5) C runs from mm 32 - 34. Since 32 is included... - this is True

Answer 2

I would go with all three since

measure 33: V⁷/IV (Bb makes it so)

measure 34: IV

measure 35: V⁷/I (the C is a pedal note)

measure 36: I